Add support for interface types in generate query functionality

[imolorhe]

Discussed in #2131

^{Originally posted by alexrhogue February 23, 2023}
One of the fields of my root object is an gql interface type. When I use the autocomplete (with either the shortcut or add query button) that field is not populated.

Is this a bug or are interfaces not supported? I didn't see anything related to it in the issues or discussion tabs. Thanks!